Lower grille



FIG. 1 is a right, front perspective view of a lower grille showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is another right, front perspective view thereof shown mounted on a vehicle.

The broken lines shown throughout drawing views are for illustrative and environmental purposes and form no part of the claimed design. 

CLAIM The ornamental design for a lower grille, as shown and described. 